The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

The mere mention of the term "polar vortex" can set your head spinning (and maybe eyes rolling). It’s got to be clickbait, ...

The polar vortex spins anticlockwise around the North Pole with wind speeds of about 155mph (250km/h). There are two types of polar vortexes – tropospheric and stratospheric. The tropospheric ...

Stable polar vortex: When the stratosphere over the Arctic is cold, it's considered stable. The wind around the polar vortex ...

Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...

As more Arctic air masses flow into the WOWK-TV region, you have undoubtedly heard the term “Polar Vortex” brought up in the ...

Recent forecasts suggest some Americans might be getting a much-needed break from the freezing temperatures that have gripped ...

For the purposes of this article, we're talking about the stratospheric polar vortex. It's a semi-permanent area of low pressure that resides over the Arctic. Stable polar vortex: When the ...